Radio interferometers achieve the highest resolutions at the cost of sparse data coverage. Incompletely sampled sky distributions in Fourier space result in noise artifacts in the source reconstructions. Established cleaning software is often time-consuming and lacks reproducibility. In this work, I propose a novel cleaning strategy for radio interferometer data based on convolutional neural networks to adjust current analysis strategies to the new telescope standards. This deep learnin...

The adoption of software development technologies is very closely related to the topic of user support. This is especially true in early phases, when the users are not familiar with the modification or the build processes of the software that has to be developed nor with the technology used for software development. This work introduces an approach to improve the usability of software development technologies represented by the Combinatory Logic Synthesizer (CL)S Framework. (CL)S is base...

The LHCb experiment is undergoing its first major detector upgrade to operate at a five times higher instantaneous luminosity during the Run 3 data taking period. It is equipped with a new set of tracking detectors (VELO, UT, SciFi) to match the conditions of an increased track multiplicity and radiation damage. The hardware trigger stage is removed. The first stage of the software trigger system is implemented to run on about 200 GPU cards with a throughput of 30MHz. An alternative tracking ...

This database contains data of collapses in tunnels during construction or operation and cases of extensive maintenance signifying the end of service life. It can form the basis for statistical interpetations as well as hisotrical review of various tunnel projects. This database also forms the basis for the investigations reported in the papers "Revised Comparison of Tunnel Collapse Frequencies and Tunnel Failure Probabilities" by P. Spyridis and D. Proske (DOI:10.1061/AJRUA6.0001107) and "As...

In dieser Arbeit wird die Anwendung von Modellen und Methoden, die aus der elektrischen Leitungstheorie bekannt sind, für Wärmeübertragungsprobleme in Kabeln analysiert. Möglichkeiten und Grenzen werden aufgezeigt. Basierend auf der konsequenten Nutzung von Analogien zwischen elektrischer und thermischer Domäne wird ein thermisches Analogon zur elektrischen Leitungstheorie für ein einadriges Kabel abgeleitet. Die notwendigen Annahmen und Vereinfachungen werden diskutiert. Für komplexere Kabel...

Personality plays a significant role in the workplace, and organizations need to take this into consideration when making decisions about hiring, task design, and creating a positive work environment. However, there is no universally agreed personality model or theory. Instead, there are interindividual (between-person differences) and intraindividual (within-person dynamics) perspectives on personality, which provide different insights each. The combination of both interindividual difference...

Die Gewinnung von Aluminium und seine Weiterverarbeitung zu Produkten ist mit einem hohen Energiebedarf und Treibhausgasemissionen verbunden. Andererseits führen die Folgen des Klimawandels zu verstärkten Anstrengungen in den Bereichen Energieeffizienz, Emissionsminderung und Ressourcenschonung. Das direkte Recycling ohne Wiedereinschmelzen ermöglicht Energie-, Treibhausgas- und Materialeinsparungen. Eine neue Prozesskette, bestehend aus dem Strangpressen von Aluminiumspänen zu einem zylindr...

Die Technologie der additiven Fertigung (AM) bietet ein großes Potenzial für Leichtbauanwendungen und wird neben dem Rapid Prototyping auch immer häufiger für industrielle Anwendungen eingesetzt. Ein Nachteil dieses Verfahrens sind die lange Produktionszeit und die begrenzte Baugröße. Ziel dieser Arbeit ist die Entwicklung und Untersuchung einer neuen Prozesskombination zur effizienten Herstellung von umformbaren Blechen mit strukturiertem Kern. Es wird ein kombinierter Prozess aus AM und ans...

Transformative research requires transdisciplinary collaboration, forcing researchers out of their disciplinary comfort zones. In transdisciplinary research projects, the role of (social) scientists changes, and non-scientific actors become part of research projects. Transdisciplinary research is particularly suited to not only generate scientific knowledge, but also invent real-world solutions and to innovative. This, however, does not come without challenges. Implementing a transdisciplinar...

The glass transitions of amorphous ices as well as of aqueous phosphoric acid solutions were reported to display very large 1H/2H isotope effects. Using dielectric spectroscopy, in both types of glassformers for equimolar protonated/deuterated mixtures an almost ideal isotope-mixing behavior rather than a bimodal relaxation is found. For the amorphous ices this finding is interpreted in terms of a glass-to-liquid rather than an orientational glass transition scenario. Based on calorimetric re...

Because organisms living in the deep sea and in the sub-seafloor must be able to cope with hydrostatic pressures up to 1000 bar and more, their biomolecular processes, including ligand-binding reactions, must be adjusted to keep the associated volume changes low in order to function efficiently. Almost all organisms use organic cosolvents (osmolytes) to protect their cells from adverse environmental conditions. They counteract osmotic imbalance, stabilize the structure of proteins and maintai...

For the first time, mixed carboxylic anhydrides were accessed directly via homogeneous palladium catalysis from 1,3-butadiene and carboxylic acids. Under carbonylative telomerization conditions, the respective mixed 3,8-nonadienoic anhydrides are formed in a single reaction step with yields of up to 82%. These very reactive mixed anhydrides can then be used for consecutive reactions in a one-pot manner and selectively transfer the newly formed unsaturated C9 unit. Possible changes in the prop...

Entrepreneurship is about making decisions: whether or not to exploit a recognized opportunity, how to interact with potential customers or competitors, which financial source to pursue, how to select a team, and many more. Most of these decisions are made under circumstances of imperfect information that involves a high level of uncertainty. Coping with such circumstances requires cognitive effort. While some individuals tend towards heartfelt cognition styles with intuitive decisions, other...

Developing a numerical and algorithmic tool which accurately detects unyielded regions in yield stress fluid flow is a difficult endeavor. To address these issues, two common approaches are used to handle singular behaviour at the yield surface, i.e. the augmented Lagrangian approach and the regularization approach. Generally, solvers do not operate effectively when the regularization parameter is very small in the regularization approach. In this work, we use a formulation involving a new a...